VEGA POINTRAC 31 Foundation Fieldbus - Manual (Page 47)

47
11 Supplement
POINTRAC 31 • Foundation Fieldbus
41779-EN-131119
General Information LAS (Link Active Scheduler) No
Master Capable No
Number of VCRs (Virtual Communication
Relationships)
24
Function block Analog Input (AI)
The function block "Analog Input (AI)" takes the original measured value selected by a Channel
Number and makes it available to additional function blocks on its output.
Fig. 18: Schematic presentation function block Analog Input (AI)
Parameter list
The following table gives you an overview of the parameters used.
FF descriptor Rel. In-
dex
Description Unit
PRIMARY_VALUE 13 PRIMARY_VALUE (Linearized value). This is the
process value after min/max adjustment and Lin-
earization with the status of the transducer block.
The unit is defined in "PRIMARY_VALUE_UNIT"
FF_ PRIMARY_VAL-
UE_UNIT
FF_PRIMARY_VALUE_
UNIT
14 Selected unit code for "PRIMARY_VALUE" -
FF_VAPOR_DENSITY 15 Density with Temperature correction FF_VAPOR_DENSI-
TY_UNIT
FF_VAPOR_DENSITY
_UNIT
16 Selected unit code for “FF_VAPOR_DENSITY” -
FF_PROCESS_TEM-
PERATURE
17 Process temperature FF_PROCESS_TEM-
PERATURE_UNIT
FF_PROCESS_TEM-
PERATURE_UNIT
18 Selected unit code for “FF_PROCESS_TEMPER-
ATURE”
-
FF_DENSITY 19 Density FF_DENSITY_UNIT
FF_DENSITY_UNIT 20 Selected unit code for “FF_DENSITY” -
FF_VOLUMETRIC_
FLOW
21 Volumetric flow FF_VOLUMETRIC_
FLOW_UNIT